Question

When I call this method it will only return the digits before the decimal place for instance:

1

2

3

= 6

This is fine but when I try:

1.5

2

3.5

= 6 

How can I get it to sum the decimal places?

public class Service1 : System.Web.Services.WebService
{

    [WebMethod]


    public string CalculateSum(List<int> listDouble)
    {
        return listDouble.Sum().ToString();


    }
}

}

If I use public string CalculateSum(List<double> listDouble) the result is always 0.

No matter what I type in.

This is how I am passing information:

        {
            CalculateSumOfList.ServiceReference1.Service1SoapClient client = new CalculateSumOfList.ServiceReference1.Service1SoapClient();
            CalculateSumOfList.ServiceReference1.ArrayOfInt arrayOfInt = new CalculateSumOfList.ServiceReference1.ArrayOfInt();
            arrayOfInt.AddRange(listDouble.Select(d => (int)d).ToList());

string result = client.CalculateSum(arrayOfInt);
label1.Text = Convert.ToString(result);




                }

Answer 1

Look at your parameters:

public string CalculateSum(List<int> listDouble)

That’s a list of integers, despite the name. If you meant it to be a list of doubles, you should change the type:

public string CalculateSum(List<double> listDouble)

You’ll need to uncomment your proper Sum implementation, too… returning the result of calling ToString on the return value from Enumerable.Select really isn’t going to do what you want.